Fuel distributor



Oct. 19, 1937. H. P. ANDERSON FUEL DISTRIBUTOR 2 Sheets-Sheet 1 FiledNov. 13, 1935 INVENTOR. Howard P Andewon ATTORNEY.

Oct. 19, 1937. H. P. ANDERSON 2,095,950

FUEL DISTRIBUTOR Filed Nov. 13, 1935 2 Sheets-Sheet 2 9- 2 I INVENTOR.Howana FA/vdemon ATTORNEY.

Patented Oct. 19, 1937 UNITED STATES FUEL DISTRIBUTOR Howard P.Anderson, Erie, Pa., assignor, by mesne assignments, to The StandardStoker Company, Inc., a corporation of Delaware Application November 13,1935, Serial No. 49,484

4 Claims.

This invention relates generally to fuel distributing means for boilerfurnaces and more particularlyto fuel distributing means for locomotivestokers.

The main object of the invention is to provide a novelfuel distributingmeans which will aiford greater flexibility in controlling the quantityof fuel delivered to desired areas of the firebed.

More specifically, it is an object of the invention to provide, in afuel distributing system employing a pressure fluid head for projectingfuel over a firebed, auxiliary pressure fluid means arranged with thefuel distributing system to permit distributing more or less fuel to onepart of the firebed than another, as desired.

With the above objects in view, the invention consists in the featuresof construction, the combination of elements and arrangement of partshereinafter more fully described and claimed.

" In the drawings, v

Fig. 1 is a sectional plan view through a locomotive boilerfurnaceandits firing opening with a portion of a stoker shownapplied to thefiring opening in similar section;

'Fig. 2 is a sectional view on the irregular line 22 of Fig. .3; and

Fig. 3 is an enlarged horizontal section of the stoker and adjacentportions of the locomotive boiler shown in Fig. 1, parts being shown ineleva-' tion. a

'While the inventionis hereinafter described as applied to a locomotiveboiler firebox, it will be obvious that the invention is equallyapplicable to fireboxes of other types.

A locomotive is indicated generally by the numeral l0 and comprises afirebox I I, having grates l2 and a boiler backwall l3 provided with afiring opening l4. Q A stoker discharge conduit 115 communicates :withthe lower portion of the firing opening M.

Only so much of the stoker has been illustrated in the drawings as isnecessary to a complete understanding of the invention. The dischargecon charge conduit l5 projecting through the firing opening M. Thedischargeconduit i5 is provided with an opening'2l through which accessmay be had to the interior thereof, and a cover 22 forms a closure forthe opening 2 I.

Rearward of the distributor plate 24) and out--v The mouth portion I6 isside of the firebox is a vertically disposed distributor head 23 dividedinto a plurality of chambers, preferably, as shown in Fig. 3, a centerchamber 24, leftand right side chambers 25 and 25, respectively, andleft and right intermediate chambers 26 and 25', respectively. Theforward face El of the distributor head 23 is provided with a pluralityof jet openings communicating with the chambers in the head. Center jets28 communicate with center chamber 24 and are directed across thelongitudinal central portion of the firebox grate; the left and rightside jets 29 and 29", respectively, communicate with the left and rightside chambers 25 and 25, respectively, and are directed toward the leftand right side portions, respectively, of the firebox grate; and, theleft and right intermediatejets 38 and 30, respectively, communicatewith the left and right intermediate chambers 2'6 and 26', respectively,and are directed toward the left and right front corners, respectively,of the firebox grate.

Fluid under pressure, preferably steam, is supplied to the chambers 24,25, 25', 26 and 26' by supply pipes, 3|, 32, .32, 33 and 33,respectively, provided respectively with the control valves .34, 35,35', 36 and 36. The fluid pressure blasts issuing from the jets projectthe fuel from the plate 210 into the firebox and scatter it over thegrate. The plate .20 is provided at its forward corner portions withupstanding curved ribs 31, which intercept a portion of the fuel anddirect it to the rear corners of the firebox. The combined blasts ofpressure fluidissuing from the jet openings form a fan-shaped blastwhich, when the control valves are properly adjusted, cooperates withthe ribs 31 to spread fuel uniformly over the entire grate. In practice,it is often necessary, due to uneven draft conditions or for otherreasons, to temporarily deliver more fuel to one part of the fireboxthan another. This can to a certain extent be accomplished by adjustmentof thecontrol valves 34, 35, 35', 36 and 36.

As hereinafter described, the present invention provides an arrangementwhereby the fireman can set the fluid pressure distributor jets at asuitable pressure permitting them to spread fuel uniformly and thencompensate for any unevenness in the firebed without resorting tochanging the pressure of any of the distributor jets; This greatlysimplifies the duties of the fireman.

Jet pipes 38 and 39 extend vertically, one through each rearward cornerof the distributor plate 20 and are provided with jet openings 49 and M,respectively, in that portion projecting above the surface of the plate20. Fluid under pressure is supplied to the jet pipes 38 and 39 from asuitable source by the supply pipes 42 and 43, respectively, providedwith control valves 44 and 45, respectively, whereby fiuid underpressure may be supplied to one or both of the jet pipes or the supplyof fiuid under pressure to both can be out off. Flexible pipe sections42' and 43' connect supply pipes 42 and 43 with the jet pipes 38 and1-f9,'respectively. j

The jet pipes 38 and 39 are provided beneath the plate with'arms 46 and41, respectively, to the free ends of which are flexibly attached rods48 and 49, respectively, that project through respective side walls .ofthe discharge conduit l5. 7

The free ends of the rods 48 and 49 are threaded and carry the adjustingknobs 50 and 5|, respectively, which, when turned, cause partialrotation of the jet pipes 38 and 39, permitting the a direction of theblast issuing from the jet openings 40 and 4| to change angularly withrespect to a vertical plane passed through the longitudi- V nal centerline of the firebox.

, the firebox. More fuel is also delivered to other parts of the lefthalf of the firebox due to the fact that as the fuel is delivered ontothe plate 23, more will roll over to the left side thereof since it isbeing projected morerapidly from that side. On

' the other hand, if it is found necessary to deliver slightly more fuel'to the right half of the firebox, then the right auxiliary jet 39 isturned on and directed against the right rib 31. Considerably more fuelcan be delivered to the left half of the firebox, however, by shuttingoff the left auxiliary jet 38 and pointing the right auxiliary jet 39 tothe left so that the fluid pressure stream is directed diagonally acrossthe plate 20.

r The direction taken by the coal will be governed by the resultant ofthe fluid pressure stream issuing from the distributor hea'd23 and thefluid pressure stream issuing from the right auxiliary jet. Theresultant fluid pressure stream will obviously be directed more to theleft half of the firebox and more fuel will be delivered to that side.If at the same time the left auxiliary jet is turned on and directedtoward the left rib, the amount of coal delivered'to the left half ofthe firebox is increased. Similarly, by directing the left auxiliary jetdiagonally across the plate 20 and cutting off the right auxiliary jetor directing it against the right rib, delivery oficoal W111 be heavierin the right half of the firebox.

Suppose now, that the auxiliary jets are ar-' ranged for heavier firingto the left half of the firebox: then any desired area of the left halfof the firebox considered: lengthwise can be fired 1more'heavily byadjusting the right auxiliary jet so that the resultant of the fluidpressure streams ,issuingfrom the distributor head and the rightauxiliary jetiwillbe'directed to that portion of the left half ofthe'firebox where the heaviest charge .of fuel is desired; The directionof the resultant fiuid pressure stream may also be varied by increasingor decreasing thefluid pressure of the auxiliary jet. My noveldistributing device thus provides for delivering a heavier charge offuel to one half of the firebox than the other and for delivering .aheavier charge to any desired area of that half of the firebox withoutdisturbing the original setting of the distributor head jets.

I claim:

1. In a mechanical stoker, the combination of a firebox having a grateand an upright wall with a firing opening therein above the level ofsaid grate, means for delivering fuel to said firing opening, adistributor plate arranged to receive fuel from said means, adistributor head at the rear of said plate, said head having a pluralityof jet passages arranged for emission of fluid under pressure acrosssaid-plate for projecting fuel to all parts of said grate, means foraltering the distribution of fuel to said grate including a jetmember'mounted for rotation on a vertical axis at the side of saiddistributor head, said jet member having a jet passage arranged for theemis sion of fluid under pressure across said plate, said jet memberbeing arranged so that the extended axis of the jet passage thereof willintersect the extended axis of at least one of the jet passages of saiddistributor head, and means for adjusting said jet member to any one ofa number of positions about its vertical axis.

2. In a mechanical stoker, the combination of a firebox having a grateand an upright wall with a firing opening therein above the level ofsaid grate, means for delivering fuel to said firing opening, adistributor plate arranged to receive fuel from said means, adistributor head at the rear of said plate, said head having a pluralityof jet passages arranged for emission of fluid under pressure acrosssaid plate for projecting fuel to all parts of said grate, means foraltering the distribution of fuelito said grate including a jet memberat each side of said distributor head mounted for rotation on a verticalaxis, said jet members each having a jet passage arranged for theemission of fiuid under pressure across said plate, said jet membersbeing arranged so that the extended axis of each of the jet passagesthereof will intersect the extended axis of at least one of the jetpassages of said distributor head, means for independently operatingsaid jet members, and means for independently adjusting each of said jetmembers to any one of a number of positions about its'respectiveVertical axis.

3. In a mechanical stoker, the combination of a firebox having a grateand an upright wall with arfiring opening therein above the level ofsaid grate, means for delivering fuel to said firing opening, adistributor plate arranged to receive fuel from said means, adistributor head at the rear of said plate, said head having a pluralityof jet passages arranged for emission of fiuid under pressure acrosssaid plate for projecting fuel to all parts of said grate, a jet memberat each side of said'distributor head mounted for rotation on a verticalaxis, and means for adjusting each of said jet members to any one of anumber of, positions about its vertical axis, said jet members eachhaving a jet passage arranged for the emission of fluid under pressureacross said plate, said plate having upstanding ribs curving inwardly,toward each other from the" forward corners of the plate and thencerearwardly for such a distance that the extended axis of ,a jet passageof a jet member will strike the concave sideof a diagonally opposite ribin at least one of its adjusted positions.

.4. In a mechanical stoker, the combination of a firebox having a grateand an upright wall with a firing opening therein above the level ofsaid grate, means for delivering fuel to said firing opening, adistributor plate arranged to receive fuel from said means, adistributor head at the rear of and spaced inwardly of the sides of saidplate, said head having a plurality of jet passages arranged foremission of fluid under pressure across said plate for projecting fuelto all parts of said grate, means for altering the distribution of fuelto said grate including a jet member at each side of said distributorhead vary the angle between said intersecting pressure 10 fluid streams.

HOWARD P. ANDERSON.

